Module: VER::Methods::Completion

Defined in:
lib/ver/methods/completion.rb

Constant Summary collapse

ASPELL_PARSE = 
/^& (.*?) (\d+) (\d+): (.*)$/

Class Method Summary collapse

Class Method Details

.aspell(text) ⇒ Object 



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# File 'lib/ver/methods/completion.rb', line 38

def aspell(text)
  text.store(self, :last_used, :aspell)

  from = text.index('insert - 1 chars wordstart')
  to   = text.index('insert - 1 chars wordend')
  word = text.get(from, to)

  complete text do
    [from, to, aspell_completions(text, word)]
  end
end

.aspell_completions(text, word) ⇒ Object 



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# File 'lib/ver/methods/completion.rb', line 175

def aspell_completions(text, word)
  if result = aspell_execute(word)[word]
    result[:suggestions]
  else
    [word]
  end
end

.aspell_execute(word) ⇒ Object 



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# File 'lib/ver/methods/completion.rb', line 185

def aspell_execute(word)
  require 'open3'
  results = {}

  Open3.popen3("aspell pipe") do |stdin, stdout, stderr|
    stdin.print("^#{word}")
    stdin.close
    result = stdout.read

    result.scan(ASPELL_PARSE) do |original, count, offset, suggestions|
      results[original] = {
        count: count.to_i,
        offset: offset.to_i,
        suggestions: suggestions.split(/\s*,\s*/),
      }
    end
  end

  return results
end

.complete(text, options = {}, &block) ⇒ Object 



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# File 'lib/ver/methods/completion.rb', line 22

def complete(text, options = {}, &block)
  Undo.separator(text)
  VER::HoverCompletion.new(text, options, &block)
end

.complete_again(text) ⇒ Object 



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# File 'lib/ver/methods/completion.rb', line 32

def complete_again(text)
  if last_used = text.store(self, :last_used)
    send(last_used, text)
  end
end

.complete_fallback(text) ⇒ Object 



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# File 'lib/ver/methods/completion.rb', line 27

def complete_fallback(text)
  indent = ' ' * text.options.shiftwidth
  text.insert(:insert, indent)
end

.contextual ⇒ Object 



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# File 'lib/ver/methods/completion.rb', line 50

def contextual
  return unless text.load_preferences
  text.store(self, :last_used, :contextual)

  from, to = 'insert - 1 chars wordstart', 'insert - 1 chars wordend'

  complete(text) do
    [from, to, contextual_completions(text, from, to)]
  end
end

.contextual_completions(text, from, to) ⇒ Object 



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# File 'lib/ver/methods/completion.rb', line 97

def contextual_completions(text, from, to)
  tags  = Set.new(text.tag_names(to))
  completions = []

  text.preferences.each do |key, value|
    name, scope, settings, uuid =
      value.values_at('name', 'scope', 'settings', 'uuid')
    scopes = Set.new(scope.split(/\s*,\s*|\s+/))

    next unless completion_command = settings['completionCommand']
    next unless scope_compare(tags, scopes)

    current_word = text.get(from, to).strip
    ENV['TM_CURRENT_WORD'] = current_word

    tmp = Tempfile.new('ver/complete_tm')
    tmp.print(completion_command)
    tmp.close
    begin
      FileUtils.chmod(0700, tmp.path)
      result = `exec '#{tmp.path}'`
      completions = result.scan(/[^\r\n]+/)
    ensure
      tmp.close!
    end
  end

  completions
rescue => ex
  VER.error(ex)
end

.file(text) ⇒ Object 



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# File 'lib/ver/methods/completion.rb', line 61

def file(text)
  text.store(self, :last_used, :file)

  complete text, continue: true do
    file_completions(text, 'insert linestart', 'insert')
  end
end

.file_completions(text, from, to) ⇒ Object

TODO: use filename_under_cursor, that should be much more accurate.



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# File 'lib/ver/methods/completion.rb', line 142

def file_completions(text, from, to)
  lineno = text.index(from).line
  line = text.get(from, to)

  return [] unless match = line.match(/(?<pre>.*?)(?<path>\/[^\s"'{}()\[\]]*)(?<post>.*?)/)
  from, to = match.offset(:path)
  path = match[:path]

  path.sub!(/\/*$/, '/') if File.directory?(path)

  list = Dir["#{path}*"].uniq - [path]

  list.map! do |item|
    item << '/' if File.directory?(item)
    item.sub(path, '/')
  end

  return "#{lineno}.#{to - 1}", "#{lineno}.#{to}", list
end

.line(text) ⇒ Object 



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# File 'lib/ver/methods/completion.rb', line 69

def line(text)
  text.store(self, :last_used, :line)

  from, to = 'insert linestart', 'insert lineend'
  lines = line_completions(text, from, to)

  complete(text){ [from, to, lines] }
end

.line_completions(text, from, to) ⇒ Object 



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# File 'lib/ver/methods/completion.rb', line 133

def line_completions(text, from, to)
  line = text.get(from, to).to_s.strip

  return [] if line.empty?
  needle = Regexp.escape(line)
  text.search_all(/^.*#{needle}.*$/).map{|match, *_| match }.uniq
end

.scope_compare(tags, scopes) ⇒ Object 



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# File 'lib/ver/methods/completion.rb', line 129

def scope_compare(tags, scopes)
  scopes.all?{|scope| tags.any?{|tag| scope.start_with?(tag) }}
end

.smart_tab(text) ⇒ Object

TODO: use the tag names at the location to customize completion choices the textmate bundles have quite some stuff for that.



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# File 'lib/ver/methods/completion.rb', line 8

def smart_tab(text)
  context = text.get('insert - 1 chars', 'insert + 1 chars')

  if context =~ /^\S\W/
    if text.store(self, :last_used)
      complete_again(text)
    else
      snippet(text)
    end
  else
    Snippet.jump(text) || complete_fallback(text)
  end
end

.snippet(text) ⇒ Object 



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# File 'lib/ver/methods/completion.rb', line 78

def snippet(text)
  return unless text.load_snippets
  text.store(self, :last_used, :snippet)

  Snippet.dwim(text)
end

.word(text) ⇒ Object 



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# File 'lib/ver/methods/completion.rb', line 85

def word(text)
  text.store(self, :last_used, :word)

  y, x = *text.index('insert')
  x = (x - 1).abs
  from, to = text.index("#{y}.#{x} wordstart"), text.index("#{y}.#{x} wordend")

  words = word_completions(text, from, to)

  complete(text){ [from, to, words] }
end

.word_completions(text, from, to) ⇒ Object 



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# File 'lib/ver/methods/completion.rb', line 162

def word_completions(text, from, to)
  prefix = text.get(from, to).strip
  return [] if prefix.empty?
  prefix = Regexp.escape(prefix)

  found = text.search_all(/(^|\W)(#{prefix}[\w-]*)/).
    sort_by{|match, mf, mt|
      [VER::Text::Index.new(text, mf).delta(from), match]
    }.map{|match, *_| match.strip[/[\w-]+/] }.uniq
  found.delete prefix
  found
end